| 发明名称 |
WIDE-ANGLE LENS SYSTEM |
| 摘要 |
A wide angle lens system, in order from an object side to an image side, the wide angle lens system includes a first lens with negative refraction power, a second lens with positive refraction power, and an image plane. The wide angle lens system is satisfied with the following formulas: (1) 5<TTL/f<7; (2) −1.9<f1/f<−1.0; (3) 1.0<f2/f<2.0, where TTL is a distance between an object side surface of the first lens and the image plane, f is a focal length of the wide angle lens system, f1 is a focal length of the first lens, f2 is a focal length of the second lens. |
| 申请公布号 |
US2017123191(A1) |
申请公布日期 |
2017.05.04 |
| 申请号 |
US201615080708 |
申请日期 |
2016.03.25 |
| 申请人 |
HON HAI PRECISION INDUSTRY CO., LTD. |
发明人 |
WANG KUANG-JU;HSU TE-LUN;HSING CHENG-HUNG |
| 分类号 |
G02B13/04;G02B13/00;G02B27/00;G02B9/10 |
主分类号 |
G02B13/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A wide angle lens system, in order from an object side to an image side, the wide angle lens system comprising:
a first lens with negative refraction power including a first surface on the object side; a second lens with positive refraction power; and an image plane; wherein the wide angle lens system is satisfied following formulas:
5<TTL/f<7;−1.9</f<−1.0;1.0<f2/f<2.0; where TTL is a distance between the first surface and the image plane, f is a focal length of the wide angle lens system, f1 is a focal length of the first lens, f2 is a focal length of the second lens. |
| 地址 |
New Taipei TW |
